Journal of Chest Surgery

The Korean Society for Thoracic and Cardiovascular Surgery (대한심장혈관흉부외과학회)
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Growth of Pulmonary Autograft in Swine, I.Feasibility of the Operation

신생돈을 이용한 이식 자가 폐동맥의 성장에 관한 연구, 제1보, 수술의 적합성

  • Published : 1995.10.01
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Abstract

In order to test the hypothesis that the pulmonic valve, when used to replace the aortic root as a pulmonary autograft, will remain a viable anatomical structure and will grow and develop normally along with the host, we performed aortic valve replacement with the pulmonary autograft in 15 neonatal piglets. The weight of the donor was 9.3 $\pm$ 0.2 kg, the recipient 9.6 $\pm$ 0.3 kg. Measured diameters of pulmonic annulus were 14 $\pm$ 0.2 mm for autograft and 14.2 $\pm$ 0.2 mm for pulmonary artery homograft. Operation was performed under cardiopulmonary bypass with deep hypothermia [20oC at low flow perfusion [70 ml/kg/min . The mean operation time was 227 $\pm$ 10 min., bypass time 152$\pm$ 7.6 min. and aortic cross clamp time 73$\pm$ 4.6 min.. 9 piglets survived more than 12 hours. One survived 12 days and died of pneumonia and the latest one survived in good condition and sacrificed at postoperative 6th week for cardiac catheterization and pathologic examination that revealed the viability and growing of the pulmonary autograft. Currently we are able to complete the operation with good preservation of cardiac function, and our postoperative care has evolved to the extent that we are now confident enough of having an acceptable percentage of long term survivors to undertake a definite study in this regard.

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References

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